Final answer:
To find the miles per gallon (MPG) of Jessica's SUV, divide the total distance she drove by the number of gallons she used.
Step-by-step explanation:
To find the miles per gallon (MPG) of Jessica's SUV, we can start by determining the total amount of gasoline she used. She drove 210 miles and her car informed her that she could drive 50 more miles on the remaining gas, which means she used 210 + 50 = 260 miles in total. Since her SUV has a 20-gallon gas tank, we can divide the total distance by the number of gallons to find the MPG.
MPG = Total Distance / Total Gallons
MPG = 260 miles / 20 gallons
MPG = 13 miles per gallon